Top 100 Department of Health and Human Services Contractors, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Analytic Services Inc. Through Advanced Technology International Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology) 325414 Biological Product (except Diagnostic) Manufacturing	$1,379,725,319	3.8%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023 and not on the FY2025 list; unchanged since FY2023.
2	Advanced Technology International Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology) 325414 Biological Product (except Diagnostic) Manufacturing	$1,207,467,926	3.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
3	Leidos Holdings, Inc. 10 awardees, including Leidos Biomedical Research Inc., Leidos, Inc. and QTC Medical Services Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541512 Computer Systems Design Services 541519 Other Computer Related Services	$1,114,086,631	3.0%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2023 and #3 in FY2025; down 1 since FY2023.
4	General Dynamics Corporation 4 awardees, including General Dynamics Information Technology, Inc. and Dynport Vaccine Company LLC Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541330 Engineering Services	$1,054,083,636	2.9%	Rank history: #9 in FY2021, #10 in FY2022, #4 in FY2023 and #1 in FY2025; unchanged since FY2023.
5	Maximus Federal Services, Inc. Top NAICS codes 561422 Telemarketing Bureaus and Other Contact Centers 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$760,108,599	2.1%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
6	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$654,178,668	1.8%	Rank history: #11 in FY2021, #8 in FY2022, #5 in FY2023 and #4 in FY2025; down 1 since FY2023.
7	Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$603,429,395	1.6%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
8	Roche Diabetes Care Inc 2 awardees, including Genentech Usa, Inc. Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing 325413 In-Vitro Diagnostic Substance Manufacturing	$397,367,570	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
9	Research Triangle Institute Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services 541720 Research and Development in the Social Sciences and Humanities	$380,068,031	1.0%	Rank history: #28 in FY2021, #25 in FY2022, #17 in FY2023 and #21 in FY2025; up 8 since FY2023.
10	Blue Cross & Blue Shield of South Carolina 3 awardees, including Palmetto Gba, LLC, Companion Data Services LLC and CGS Administrators, LLC Top NAICS codes 524114 Direct Health and Medical Insurance Carriers 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services	$378,914,422	1.0%	Rank history: #10 in FY2021, #11 in FY2022, #6 in FY2023 and not on the FY2025 list; down 4 since FY2023.
11	Family Endeavors, Inc. Top NAICS codes 561210 Facilities Support Services 624110 Child and Youth Services	$359,890,835	1.0%	Rank history: #14 in FY2021, #2 in FY2022, #22 in FY2023 and not on the FY2025 list; up 11 since FY2023.
12	Seqirus Inc. Top NAICS codes 236210 Industrial Building Construction 325414 Biological Product (except Diagnostic) Manufacturing	$337,168,791	0.9%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
13	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$324,751,112	0.9%	Rank history: #38 in FY2021, #35 in FY2022, #16 in FY2023 and #10 in FY2025; up 3 since FY2023.
14	Acacia Center for Justice Top NAICS codes 541110 Offices of Lawyers	$324,588,730	0.9%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
15	Semanticbits LLC 4 awardees, including ICF Incorporated, L.L.C. and Incentive Technology Group LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$324,448,545	0.9%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; up 136 since FY2023.
16	Livanta LLC Top NAICS codes 541618 Other Management Consulting Services	$314,839,247	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 121 since FY2023.
17	The Interpublic Group of Companies Inc 2 awardees, including IPG Dxtra, Inc. Top NAICS codes 541810 Advertising Agencies 541613 Marketing Consulting Services	$307,473,290	0.8%	Rank history: #15 in FY2021, #15 in FY2022, #8 in FY2023 and not on the FY2025 list; down 9 since FY2023.
18	Keystone Peer Review Organization, LLC 2 awardees, including Ohio Kepro, LLC Top NAICS codes 541618 Other Management Consulting Services 541611 Administrative Management and General Management Consulting Services	$305,828,327	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 140 since FY2023.
19	Noridian Healthcare Solutions, LLC Top NAICS codes 524114 Direct Health and Medical Insurance Carriers 541990 All Other Professional, Scientific, and Technical Services 541512 Computer Systems Design Services	$290,081,992	0.8%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
20	Emergent Biosolutions Inc. Through Emergent Product Development Gaithersburg Inc. Top NAICS codes 541711 Research and Development in Biotechnology 325414 Biological Product (except Diagnostic) Manufacturing 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$246,724,587	0.7%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
21	Guidehouse Inc. Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$238,472,854	0.7%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
22	Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$232,497,653	0.6%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
23	The Mitre Corporation 2 awardees Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$226,779,891	0.6%	Rank history: #25 in FY2021, #29 in FY2022, #20 in FY2023 and #32 in FY2025; down 3 since FY2023.
24	Westat, Inc. 2 awardees, including Insight Policy Research, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$226,144,371	0.6%	Rank history: #27 in FY2021, #22 in FY2022, #29 in FY2023 and #24 in FY2025; up 5 since FY2023.
25	Serco Inc Top NAICS codes 541512 Computer Systems Design Services	$225,000,000	0.6%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
26	Bavarian Nordic A / S Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing	$222,920,840	0.6%	Rank history: #65 in FY2021, #18 in FY2022, #56 in FY2023 and #28 in FY2025; up 30 since FY2023.
27	Mathematica Inc. 3 awardees Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$214,364,291	0.6%	Rank history: #35 in FY2021, #36 in FY2022, #40 in FY2023 and #41 in FY2025; up 13 since FY2023.
28	Hensel Phelps Construction Co Top NAICS codes 236220 Commercial and Institutional Building Construction	$207,531,480	0.6%	Rank history: not on the FY2021 list, #6 in FY2022, not on the FY2023 list and #27 in FY2025; up 306 since FY2023.
29	Agiliti Health Inc Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance	$206,765,554	0.6%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and not on the FY2025 list; up 10 since FY2023.
30	Novitas Solutions, Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers 541990 All Other Professional, Scientific, and Technical Services 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$191,258,565	0.5%	Rank history: not on the FY2021 list, #44 in FY2022, not on the FY2023 list and #18 in FY2025; up 225 since FY2023.
31	Parkdale Advanced Materials Inc. Top NAICS codes 325220 Artificial and Synthetic Fibers and Filaments Manufacturing	$187,360,720	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	Anthem Inc. Through Wellpoint Federal Solutions, Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers 541512 Computer Systems Design Services 541519 Other Computer Related Services	$186,180,743	0.5%	Rank history: #29 in FY2021, #27 in FY2022, #19 in FY2023 and #12 in FY2025; down 13 since FY2023.
33	Peraton Inc. 2 awardees, including Peraton Enterprise Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$168,317,098	0.5%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
34	PPD Development LP 15 awardees, including Thermo Electron North America LLC, Life Technologies Corporation and FEI Company Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology) 334516 Analytical Laboratory Instrument Manufacturing 811210 Electronic and Precision Equipment Repair and Maintenance	$167,897,680	0.5%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and not on the FY2025 list; up 9 since FY2023.
35	Dell Technologies Inc. 2 awardees, including Dell Federal Systems L.P Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$167,765,381	0.5%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
36	Merck & Co. Inc. Through Merck Sharp & Dohme LLC Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing 493120 Refrigerated Warehousing and Storage	$153,952,352	0.4%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
37	Fors Marsh Group LLC Top NAICS codes 511199 All Other Publishers 513199 All Other Publishers	$153,405,123	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 285 since FY2023.
38	Deployed Services, LLC Top NAICS codes 561210 Facilities Support Services 624230 Emergency and Other Relief Services	$149,284,966	0.4%	Rank history: #83 in FY2021, #49 in FY2022, #28 in FY2023 and not on the FY2025 list; down 10 since FY2023.
39	Softrams LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$144,436,288	0.4%	Rank history: #89 in FY2021, #87 in FY2022, #62 in FY2023 and not on the FY2025 list; up 23 since FY2023.
40	National Opinion Research Center Top NAICS codes 541910 Marketing Research and Public Opinion Polling 541720 Research and Development in the Social Sciences and Humanities 541611 Administrative Management and General Management Consulting Services	$138,022,751	0.4%	Rank history: #41 in FY2021, #41 in FY2022, #37 in FY2023 and #36 in FY2025; down 3 since FY2023.
41	Mvm, Inc. Top NAICS codes 624230 Emergency and Other Relief Services	$130,246,036	0.4%	Rank history: #18 in FY2021, #9 in FY2022, #100 in FY2023 and not on the FY2025 list; up 59 since FY2023.
42	Amgen USA Inc Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$129,850,668	0.4%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
43	UnitedHealth Group Incorporated 6 awardees, including The Lewin Group, Inc., Optumserve Technology Services, Inc. and Optumserve Health Services, Inc. Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds 541611 Administrative Management and General Management Consulting Services	$124,470,473	0.3%	Rank history: #30 in FY2021, #31 in FY2022, #58 in FY2023 and #78 in FY2025; up 15 since FY2023.
44	Emergent Biosolutions Canada Inc. Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing	$122,975,784	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	Axle Informatics, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services 541690 Other Scientific and Technical Consulting Services	$121,130,903	0.3%	Rank history: #85 in FY2021, #59 in FY2022, #42 in FY2023 and #26 in FY2025; down 3 since FY2023.
46	Teamstaff Inc. 3 awardees, including Dlh, LLC and Social & Scientific Systems, Inc. Top NAICS codes 541513 Computer Facilities Management Services 541512 Computer Systems Design Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$120,869,458	0.3%	Rank history: #86 in FY2021, #89 in FY2022, #57 in FY2023 and #31 in FY2025; up 11 since FY2023.
47	HP Enterprise Services LLC 5 awardees, including Peraton Enterprise Solutions LLC, Safeguard Services LLC and Peraton Inc. Top NAICS codes 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services 541219 Other Accounting Services	$120,857,407	0.3%	Rank history: #60 in FY2021, #23 in FY2022, #15 in FY2023 and not on the FY2025 list; down 32 since FY2023.
48	Guidewell Mutual Holding Corporation Through Novitas Solutions, Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers 541990 All Other Professional, Scientific, and Technical Services	$119,533,707	0.3%	Rank history: #22 in FY2021, #39 in FY2022, #38 in FY2023 and not on the FY2025 list; down 10 since FY2023.
49	The Providencia Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$117,402,270	0.3%	Rank history: not on the FY2021 list, #17 in FY2022, #81 in FY2023 and not on the FY2025 list; up 32 since FY2023.
50	Kelly Services, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$112,751,756	0.3%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; new.
51	Siga Technologies, Inc. Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$112,552,320	0.3%	Rank history: #51 in FY2021, not on the FY2022 list, #50 in FY2023 and #83 in FY2025; down 1 since FY2023.
52	Wisconsin Physicians Service Insurance Corp. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$111,091,074	0.3%	Rank history: #66 in FY2021, #61 in FY2022, not on the FY2023 list and #39 in FY2025; up 86 since FY2023.
53	Acumen LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541690 Other Scientific and Technical Consulting Services 541720 Research and Development in the Social Sciences and Humanities	$108,155,887	0.3%	Rank history: #53 in FY2021, #64 in FY2022, #63 in FY2023 and #54 in FY2025; up 10 since FY2023.
54	CGS Administrators, LLC Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$106,646,748	0.3%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
55	Lantana Consulting Group, Inc. Top NAICS codes 541519 Other Computer Related Services 541690 Other Scientific and Technical Consulting Services	$101,994,228	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 205 since FY2023.
56	The Emmes Company, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541713 Research and Development in Nanotechnology 541611 Administrative Management and General Management Consulting Services	$100,091,398	0.3%	Rank history: #73 in FY2021, #74 in FY2022, #68 in FY2023 and #47 in FY2025; up 12 since FY2023.
57	Potomac Electric Power Co Top NAICS codes 221118 Other Electric Power Generation 221122 Electric Power Distribution	$99,106,718	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Verizon 2 awardees, including Verizon Business Network Services LLC and Cellco Partnership Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 541519 Other Computer Related Services	$97,930,857	0.3%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
59	String King Lacrosse LLC Top NAICS codes 339112 Surgical and Medical Instrument Manufacturing	$95,943,640	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Index Analytics LLC Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$95,535,381	0.3%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; up 58 since FY2023.
61	I3 Federal LLC Top NAICS codes 541519 Other Computer Related Services	$95,031,348	0.3%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2025; new.
62	Cognosante Holdings, LLC 2 awardees, including Cognosante MVH LLC Top NAICS codes 541511 Custom Computer Programming Services	$93,269,927	0.3%	Rank history: #77 in FY2021, #91 in FY2022, #88 in FY2023 and not on the FY2025 list; up 26 since FY2023.
63	Sapient Government Services, Inc. Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$93,078,409	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Government of the United States 8 awardees, including DLA Troop Support, Federal Prison Industries, Inc. and Bakersfield American Indian Health Project Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing 339113 Surgical Appliance and Supplies Manufacturing 337214 Office Furniture (except Wood) Manufacturing	$92,319,224	0.3%	Rank history: #91 in FY2021, #76 in FY2022, #64 in FY2023 and #40 in FY2025; unchanged since FY2023.
65	Phlow Corp. Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing	$91,119,397	0.2%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2023 list and not on the FY2025 list; up 65 since FY2023.
66	Palantir Technologies Inc. Top NAICS codes 513210 Software Publishers 511210 Software Publishers	$88,551,814	0.2%	Rank history: not on the FY2021 list, #93 in FY2022, #86 in FY2023 and not on the FY2025 list; up 20 since FY2023.
67	Ascend Performance Materials Texas Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$87,666,336	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
68	Sparksoft Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$86,081,014	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
69	Essential Safety PPE LLC Top NAICS codes 339112 Surgical and Medical Instrument Manufacturing	$82,662,125	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Black Canyon Consulting LLC Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$81,238,535	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #43 in FY2025; up 13 since FY2023.
71	Sapient Corporation 3 awardees, including Plowshare Group, Inc. and Sapient Government Services, Inc. Top NAICS codes 541810 Advertising Agencies 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$79,641,637	0.2%	Rank history: #39 in FY2021, #40 in FY2022, #32 in FY2023 and not on the FY2025 list; down 39 since FY2023.
72	Ingenesis Inc. 2 awardees, including Kelly Services, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$77,599,436	0.2%	Rank history: #24 in FY2021, #30 in FY2022, #31 in FY2023 and not on the FY2025 list; down 41 since FY2023.
73	True North Communications Inc. Top NAICS codes 541810 Advertising Agencies	$77,060,488	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; new.
74	First Coast Service Options Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$76,583,002	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and #71 in FY2025; up 24 since FY2023.
75	Esimplicity Inc. Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$75,083,562	0.2%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
76	Porter Novelli Public Services Inc. Top NAICS codes 541810 Advertising Agencies 541910 Marketing Research and Public Opinion Polling 541613 Marketing Consulting Services	$73,539,935	0.2%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2025; new.
77	American Institutes for Research In the Behavioral Sciences Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541720 Research and Development in the Social Sciences and Humanities 541690 Other Scientific and Technical Consulting Services	$72,745,549	0.2%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2025; up 57 since FY2023.
78	Mckesson Corporation 5 awardees, including Ndchealth Corporation and Mckesson Medical-Surgical Government Solutions LLC Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing 541519 Other Computer Related Services 424210 Drugs and Druggists' Sundries Merchant Wholesalers	$72,450,822	0.2%	Rank history: #1 in FY2021, #4 in FY2022, #26 in FY2023 and not on the FY2025 list; down 52 since FY2023.
79	Rei Systems, Inc. Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$69,937,225	0.2%	Rank history: #70 in FY2021, not on the FY2022–FY2023 lists and #55 in FY2025; returned.
80	Nava PBC Top NAICS codes 541511 Custom Computer Programming Services	$69,768,941	0.2%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; up 105 since FY2023.
81	Airboss Defense Group, LLC Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$69,621,047	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Tunnell Consulting Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$68,696,986	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2025; new.
83	Nighthawk Biosciences, Inc. Through Elusys Therapeutics Inc. Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing	$68,664,856	0.2%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
84	Two One Two New York, Inc. Top NAICS codes 339112 Surgical and Medical Instrument Manufacturing	$67,921,797	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Emergent Biodefense Operations Lansing LLC Top NAICS codes 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$67,400,672	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Technical Resources International, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541714 Research and Development in Biotechnology (except Nanobiotechnology) 541620 Environmental Consulting Services	$66,729,028	0.2%	Rank history: #61 in FY2021, #85 in FY2022, #10 in FY2023 and #73 in FY2025; down 76 since FY2023.
87	The Whiting-Turner Contracting Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$65,633,424	0.2%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and #90 in FY2025; down 2 since FY2023.
88	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top NAICS codes 541380 Testing Laboratories and Services 621511 Medical Laboratories	$64,717,093	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 513210 Software Publishers	$63,767,107	0.2%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and #74 in FY2025; up 8 since FY2023.
90	Life Science Logistics LLC Top NAICS codes 493120 Refrigerated Warehousing and Storage 493110 General Warehousing and Storage	$63,702,790	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 97 since FY2023.
91	Bryce Space and Technology, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541611 Administrative Management and General Management Consulting Services 561110 Office Administrative Services	$62,895,161	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 192 since FY2023.
92	Duke University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541714 Research and Development in Biotechnology (except Nanobiotechnology) 621991 Blood and Organ Banks	$61,895,341	0.2%	Rank history: not on the FY2021 list, #82 in FY2022, #77 in FY2023 and not on the FY2025 list; down 15 since FY2023.
93	Battelle Memorial Institute 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541714 Research and Development in Biotechnology (except Nanobiotechnology) 541713 Research and Development in Nanotechnology	$61,224,315	0.2%	Rank history: #84 in FY2021, not on the FY2022 list, #99 in FY2023 and #48 in FY2025; up 6 since FY2023.
94	A Square Group LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$60,784,625	0.2%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 22 since FY2023.
95	Icahn School of Medicine at Mount Sinai Top NAICS codes 621498 All Other Outpatient Care Centers 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 923120 Administration of Public Health Programs	$57,567,687	0.2%	Rank history: #81 in FY2021, not on the FY2022 list, #70 in FY2023 and not on the FY2025 list; down 25 since FY2023.
96	Alvogen Group Inc. Through Alvogen, Inc. Top NAICS codes 325412 Pharmaceutical Preparation Manufacturing	$57,099,988	0.2%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
97	American Type Culture Collection Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541714 Research and Development in Biotechnology (except Nanobiotechnology)	$56,774,622	0.2%	Rank history: not on the FY2021 list, #96 in FY2022, #53 in FY2023 and not on the FY2025 list; down 44 since FY2023.
98	Tista Science and Technology Corporation Top NAICS codes 541512 Computer Systems Design Services	$56,737,367	0.2%	Rank history: #56 in FY2021, #57 in FY2022, #66 in FY2023 and not on the FY2025 list; down 32 since FY2023.
99	LMI Consulting, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$56,560,487	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 154 since FY2023.
100	MCP Computer Products Inc. Top NAICS codes 334111 Electronic Computer Manufacturing 337214 Office Furniture (except Wood) Manufacturing 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$55,428,139	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 44 since FY2023.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $36.6 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers